Patent GB-362047-A (GB)
Title: Improvements in or relating to paper and like folding machines
IPC: B65H45/14
Filed: 1930-09-19
Abstract: 362,047. Folding paper and like sheets. MILLER, P. S., Orwell, Stocking- stone Road, and MILLER, F. A., 3, Brook Street, both in Luton. Sept. 19, 1930, No. 28059. [Class 100 (iil.] In apparatus for folding paper and like sheets comprising buckling plates d associated with folding rolls a, b, c, the leading edge of the sheet to be folded is guided and supported after leaving the rolls a, b until it engages the buckling plate d. The guiding and supporting members consist of strips g which engage recesses f in the roller b. They may be fixed or may be attached to reciprocating members h so as to move towards the plate d with the sheet and be withdrawn to permit the buckled sheet to enter the rolls b, c. In a modification, the members g are situated beneath the plate d and reciprocate in recesses in the roller c. 362,119. Feeding webs. FORGROVE MACHINERY CO., Ltd. and GROVER, F., Oakhurst Avenue, Dewsbury Road, Leeds. Nov. 7, 1930, Nos. 33517/30 and 21639/31. [Class 100 (i).] In a wrapping-machine, a web of cellulose or other transparent wrapping material is fed by means of a suction device which grips the leading edge of the web, feeds it forward to the desired extent, holds it while a length is severed, and then returns for the next feeding operation. As shown, the web B<1>, Fig. 1, passes from a roll B over guide and tensioning rollers E, El, E<4> and a guide-plate G and the front end is gripped by a suction plate I on an arm P pivoted on a shaft I<3> and oscillated by a link I<2> and cam. The surface of the plate I is provided with perforations communicating with a chamber I<4>, Fig. 4, connected by a passage I<5> to a port I<6> in the face of the arm P and between the port I<6> and a port L<2>, Figs. 4 and 5, in a fixed member L<1> connected by a pipe L to a source of suction, is arranged a valve M also pivoted on the shaft I<3> and oscillated by a cam-operated link M<1>. The valve M is provided with an exhaust port M3 and a suction port M<2> having an extension groove M<4>. When the arm P and valve M are in the position shown in full lines in Fig. 1, the plate I is open to suction through the ports I<6>, M<2>, L<2> and grips the end of the web. As the arm P moves downwards the web is fed downwards as shown in Fig. 4, suction being maintained through the groove M<4>. At this point, a holding bar H, carried by pivoted arms H<1> and operated by a cam-actuated link H<2>, is caused to grip the web while shears N, N<1> are operated to sever a length from the web. The valve M is now moved upwardly to bring the exhaust port M<3> into communication with the port I<6>, releasing the cut portion B2 of the web which has previously been gripped by members 0, O<1>, Fig. 1, of the wrapping-machine, and the arm I<1> and bar H are then returned to their initial positions. During the feeding operation, the portion of the web between the plate I and plate G is supported by fingers J pivoted to the arm P so as to be carried down therewith during the feed movement, and adapted to be depressed further into engagement with the plate I, by a cam projection K on the valve M when this is turned to destroy the vacuum in the plate I. The web is unwound from the roll continuously by a roller F, Fig. 1, driven by gearing F<2>, F<3> and a belt F<4>, a loop of web being taken up by the roller E<4>. The gearing F<2>, F3 may include a ratchet gear to allow of overrunning of the roll B. A gumming roller may be arranged to engage the leading edge of the strip while it is held by the plate I.